# Walking on Thin Ice (TV series)
**Walking on Thin Ice** (은수 좋은 날; literal title *Eun-Soo's Good Day*, revised romanization *Eunsoo Joeun Nal*) is a 2025 South Korean crime thriller television series broadcast on KBS2. It stars [Lee Young-ae](https://www.edgepedia.org/lee-young-ae) as Kang Eun-soo, a housewife who turns to selling a bag of drugs she finds in order to pay for her terminally ill husband's medical care, and Kim Young-kwang as Lee Kyung, a teacher living a double life as a drug dealer, with Park Yong-woo as the detective pursuing them.[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day)
| Key fact | Detail |
|---|---|
| Network and run | KBS2, 12 episodes, September 20 to October 26, 2025, Saturdays and Sundays at 21:20[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day) |
| Titles | English title *Walking on Thin Ice*; literal title *Eun-Soo's Good Day* (은수 좋은 날)[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day) |
| Main cast | Lee Young-ae as Kang Eun-soo, Kim Young-kwang as Lee Kyung, Park Yong-woo as Jang Tae-gu[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day) |
| Production | Directed by Song Hyun-wook; written by Jeon Young-sin; produced by Baram Pictures and Slingshot Studio[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day) |
| Ratings | First episode 3.7% nationwide (Nielsen Korea); finale 4.9%, just short of the series high of 5.1%[2](https://www.mk.co.kr/en/culture/11432134) • [3](https://www.soompi.com/article/1793208wpp/walking-on-thin-ice-ends-on-ratings-boost-the-dream-life-of-mr-kim-rises-for-2nd-episode) |
| Streaming | Viki in selected regions and KOCOWA+ in the United States[4](https://popgeeks.com/forums/threads/walking-on-thin-ice-you-want-drugs-i-need-money.103126/) |
## Premise
Kang Eun-soo is an ordinary wife and mother who never broke a rule. When her husband is diagnosed with a terminal illness, her daughter withdraws from school, and the family home is about to be taken, a bag stuffed with drugs falls into her hands, and she makes the choice to sell it to save her family.[5](https://kbsworld.kbs.co.kr/program/view.php?pg_seq=2548) She becomes entangled with Lee Kyung, her daughter's art teacher, who secretly runs his own drug operation, and the two form a wary partnership to sell the drugs.[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day) • [6](https://kdramaworlds.com/k-drama-guide/walking-on-thin-ice-2025-episode-guide-cast-ending-explained/) They are pursued by the veteran narcotics detective Jang Tae-gu, who is eventually revealed to be the series' most corrupt figure, acting as a spy for the drug dealers.[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day) • [7](https://kcdramamusings.wordpress.com/2025/10/28/walking-on-thin-ice-series-review/)
In the finale, facing a lifetime in prison, Eun-soo is offered a way out by the police: she and Lee Kyung must lure her husband's murderer, the fugitive Jang Tae-gu, into a trap.[8](https://www.tvmaze.com/shows/81647/walking-on-thin-ice)
## Production
The series was directed by Song Hyun-wook, whose earlier credits include *Another Miss Oh* and *The Beauty Inside*, and written by Jeon Young-sin, who previously co-wrote *Argon* (2017) and *The Lies Within* (2018).[2](https://www.mk.co.kr/en/culture/11432134) It was produced by Baram Pictures and Slingshot Studio and aired in KBS2's Saturday and Sunday 21:20 slot, taking over from *Twelve* and followed by *[Last Summer](https://www.edgepedia.org/last-summer-tv-series)* on November 1, 2025.[1](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day)
## Reception
**Ratings.** The first episode opened with a nationwide rating of 3.7 percent according to Nielsen Korea.[2](https://www.mk.co.kr/en/culture/11432134) Viewership rose over the run: the finale on October 26, 2025 reached an average nationwide rating of 4.9 percent, a jump of over a full percentage point from the previous night and just short of the show's all-time high of 5.1 percent. Among viewers ages 20 to 49, the finale earned a nationwide average of 2.6 percent, the drama's highest in that demographic.[3](https://www.soompi.com/article/1793208wpp/walking-on-thin-ice-ends-on-ratings-boost-the-dream-life-of-mr-kim-rises-for-2nd-episode)
**Critical response.** Reviewers highlighted the performances of the two leads and the show's refusal to romanticize the drug trade, depicting it as violent and unpredictable rather than glamorous.[9](https://fromkimchitokdrama.wordpress.com/2026/07/26/walking-on-thin-ice-k-drama-a-review/) The drug-related theme proved polarizing for a public broadcaster: some viewers praised KBS for tackling the subject in a weekend evening slot, while others questioned its appropriateness there.[2](https://www.mk.co.kr/en/culture/11432134) One review praised the first half but felt the second half shifted focus too much toward the drug dealers and away from the protagonists, rating the series 3 out of 5.[7](https://kcdramamusings.wordpress.com/2025/10/28/walking-on-thin-ice-series-review/) On IMDb the series held a rating of 7.6 out of 10 from 770 votes.[10](https://www.imdb.com/title/tt37841222/)
The ending drew particular comment: Eun-soo and Lee Kyung cannot outrun the consequences of their choices, and the drama closes on a melancholy note in which good intentions do not erase bad actions.[9](https://fromkimchitokdrama.wordpress.com/2026/07/26/walking-on-thin-ice-k-drama-a-review/)
## References
1. [Walking On Thin Ice, AsianWiki](https://asianwiki.com/index.php?title=Eun-Soo%27s_Good_Day)
2. [Why Did Lee Young-ae End Up Carrying a Bag of Drugs? 'Walking On Thin Ice' [Multi-Review], Maeil Business Newspaper](https://www.mk.co.kr/en/culture/11432134)
3. ["Walking On Thin Ice" Ends On Ratings Boost, Soompi](https://www.soompi.com/article/1793208wpp/walking-on-thin-ice-ends-on-ratings-boost-the-dream-life-of-mr-kim-rises-for-2nd-episode)
4. [Walking on Thin Ice ~ You Want Drugs. I Need Money!, PopGeeks](https://popgeeks.com/forums/threads/walking-on-thin-ice-you-want-drugs-i-need-money.103126/)
5. [Walking On Thin Ice, KBS WORLD TV](https://kbsworld.kbs.co.kr/program/view.php?pg_seq=2548)
6. [Walking on Thin Ice (2025): Episode Guide, Cast & Ending Explained, K-Drama Worlds](https://kdramaworlds.com/k-drama-guide/walking-on-thin-ice-2025-episode-guide-cast-ending-explained/)
7. ["Walking on Thin Ice" Series Review, K & C Drama Musings](https://kcdramamusings.wordpress.com/2025/10/28/walking-on-thin-ice-series-review/)
8. [Walking on Thin Ice, TVmaze](https://www.tvmaze.com/shows/81647/walking-on-thin-ice)
9. [Walking on Thin Ice (K Drama) — A Review, From Kimchi to Kdramas](https://fromkimchitokdrama.wordpress.com/2026/07/26/walking-on-thin-ice-k-drama-a-review/)
10. [Walking on Thin Ice (TV Series 2025), IMDb](https://www.imdb.com/title/tt37841222/)
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*Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › International serial drama and telenovelas › East Asian drama series › Korean contemporary drama › Thriller, crime, and mystery series*
*Initially written Sep 17, 2026 · Reviewed: Sep 18, 2026; Oct 25, 2026 · Edited: Sep 18, 2026; Oct 11, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license